OutOfSyncSourceError

Sometimes Sup's index can become out of sync with your maildir source, if a message was moved while Sup was polling for new messages.

When this happens, Sup may crash with an Redwood::OutOfSyncSourceError, or since Sup 1.2, you will see an error message like this in place of the message body:

***********************************************************************
 An error occurred while loading this message.
***********************************************************************

In these cases, you can fix Sup's index by running sup-sync. This will force Sup to find the message at its new location.